Contact the Troop Librarian to borrow books or to donate books to the Troop Library.
If you do not see the Merit Badge book you need in Inventory, contact a Librarian to make sure. New books are added often.
Always check the current edition of Scouts BSA Requirements when starting a merit badge, to be sure you have the most up to date requirements, as they may have changed since the pamphlet was printed. For more information on current requirements, check http://www.usscouts.org/mb/mbbooks.asp